I have picked up my new BG-E2N grip for my Canon EOS40D today. I have made some shots and comparison with the old BG-E2 grip.
First, some pics of the new grip.
The external appearance of the new BG-E2N grip is virtually identical to the old BG-E2 grip
The main difference between the 2 grip is that, the old BG-E2 grip has no rubber seal for the battery compartment
Whereas in the new BG-E2N grip, you can clearly see the rubber seal
You can see the Canon EOS 40D full review article here.